Wrong mask won't "learn circuit" on resmed vpap auto?

I wrote a slightly different message to this proviously. I apologize for having very busy days and not spending the time I would like trying to help others. I must trust that will come.

My machine was prescribed with resumed full size quattro mask. That mask was out of stock so DME brought fischer & Paykel mask instead.

The adapt sv has this "learn circuit" function that is intended to confirm all hoses and masks are compatible and working together.

I run "learn circuit" and get "circuit failed". It is supposed to be done with all horses and masks in place and mask clear. I do it again, same result. I remove the mask and it finishes successfully. This does me no good. I need it to complete with the mask on there. I tried it the seconday 'inspiration' hose unattached and the mask back. success! Still no good. That small hose must be there.

Now i notice this mask is from another manufacturer and maybe not made for this resumed machine. I remove the mask - successfully learn circuit. . Put it back, test unsuccessful.

I notice the mask has a one-way air flow valve. Yet, the adapt has this thin secondary. Hose intended to measure exhalations. I check that it ot blocked. but then I check that the mask has a one way valve that will never permit this smaill hose intended to check/measure exhalations from ever receiving exhalations.

While this setup has passed succussuly one to three times, I am feeling that was really the fluke.

The mask has a sma
L removable section at one end of the main tubing that has a one way air valve in it. When in place, this valve prevents exhaled air from reaching the exhale sensor tube.

With me so far? Bottom line, i am all but convinced this is the wrong mask.

If I remove the one way valve, i get "circuit learned" right away. Wondering if I should go with that ot try to discuss with Drs, receptionists, nurses, canystripers, press 1if you know something type of experience.

I feel pretty confident having this one valve out is the right thing to do ultimately. But I'm no doctor or technician. It may even fix everything righter than rain. I think the worst case is it keep me awake and /or doesn't prevent apneas. dr has tole me using wrong machine won't harm me.

So, for now, I have talked myself in to strapping on the masks with circuit learned successfully but no one way valve installed.

Can anyone confirm that the mirage quarrel does not have such a one way valve? That would all but guarantee I am correct.



Sorry I have written anything but this, my own "emergency" post for a few days.

I have recent sleep stats on my other thread. Bottom line: got my resmed dat via null modem. Having many more apneas than VPAP study in lab indicated. I'm wondering if wrong mask is responsible there, too.


Ok, thank you!! I promise more selfless and contributory posts are coming. [just not tonight]. >:->

No need to contribute in order to get help on this site

The Resmed VPAP Adapt SV is very picky as far as masks (and leaks) are concerned.
I would try to train the machine to use an F&P mask only if no other mask fit me. But "out of stock" is - IMO - not a valid reason -- certainly not when you're starting out on a machine that is so picky, and haven't even had a chance to try the recommended masks.

john.michael wrote:I notice the mask has a one-way air flow valve. Yet, the adapt has this thin secondary. Hose intended to measure exhalations. I check that it ot blocked. but then I check that the mask has a one way valve that will never permit this smaill hose intended to check/measure exhalations from ever receiving exhalations.

Are you referring to the anti-asphyxia valve -- the one behind the hole beneath the elbow in this image?



That one is not there to let exhalations out, and should be snapped shut when there's pressurized air in the mask. The valve is there to drop open and let you inhale in case there's a power failure - that's the only time it should be open and let air through - in or out. All FFM's have a valve with a similar function.

I have had problems with the F&P's anti-asphyxia valve not sealing properly (fresh from the box) - i.e. leaving that orifice open, not snapping shut as it should. So has madalot. And I noticed cpap.com had reports of that valve needing replacement in a rather short time.

If during the test the valve is open, the mask will not pass the test. Does the valve shut properly when you're wearing the mask?

Like all other masks intended for CPAP use, the F&P has exhalation ports - they are small, and - in this case - are sprinkled on the mask part that covers your nose - e.g. in the triangle above the red oval in the following image:

ozij wrote:No need to contribute in order to get help on this site

Thank you. Of course, I knew (know) that, but I won't feel good about being a 'leech'.......crazy-busy right now, though!
And, ha, I see a ton of typos and mis-spellings in my last post. Thank you for patience with those. I was ready for bed, AND typing on an iPad. Bad combination.

ozij wrote:
The Resmed VPAP Adapt SV is very picky as far as masks (and leaks) are concerned.
I would try to train the machine to use an F&P mask only if no other mask fit me. But "out of stock" is - IMO - not a valid reason -- certainly not when you're starting out on a machine that is so picky, and haven't even had a chance to try the recommended masks.

john.michael wrote:I notice the mask has a one-way air flow valve. Yet, the adapt has this thin secondary hose intended to measure exhalations. I check that it ot blocked. but then I check that the mask has a one way valve that will never permit this smaill hose intended to check/measure exhalations from ever receiving exhalations.

ozij wrote: Are you referring to the anti-asphyxia valve -- the one behind the hole beneath the elbow in this image?

Yes, exactly!

ozij wrote: That one is not there to let exhalations out, and should be snapped shut when there's pressurized air in the mask. The valve is there to drop open and let you inhale in case there's a power failure - that's the only time it should be open and let air through - in or out. All FFM's have a valve with a similar function.

That makes sense. It looks to me like it prevents exhaled air from going 'down the tube' from the mask, but it allows air from the machine to go to the mask....

So, how does that thin hose actually sense anything?? (since it is "below" the one way valve?) Hmmm,I imagine instead of sensing my exhalations, it must assist in recognizing that no flow is going from the machine to the mask when I exhale.....

ozij wrote:
I have had problems with the F&P's anti-asphyxia valve not sealing properly (fresh from the box) - i.e. leaving that orifice open, not snapping shut as it should. So has madalot. And I noticed cpap.com had reports of that valve needing replacement in a rather short time.

If during the test the valve is open, the mask will not pass the test. Does the valve shut properly when you're wearing the mask?

The valve does appear to close, both while I am wearing the mask and during the test. I will try the test again after I am home, watching for that especially closely.
The strangest thins is that if I remove the piece that contains that valve so that I can breather freely through the hose port in both directions, the test passes. Not to mention, the test passes if the mask is off the hose altogether, and it also passes if at least one end of the 'thin secondary' tubing is disconnected.

I attached all the hoses and the mask without the valve last night, got a "learned Successfully" and attempted treatment. Probably a Bad Idea. It never got to feeling right, so I gave up pretty quickly.

ozij wrote: Like all other masks intended for CPAP use, the F&P has exhalation ports - they are small, and - in this case - are sprinkled on the mask part that covers your nose - e.g. in the triangle above the red oval in the following image:

Yep, noticed those and already understood what they're all about.

I'm calling my DME in a few minutes. It remains puzzling that really without changing anything the complete chain of tubing, valve, elbow, and mask will no longer "Circuit Learned Successfully"

Ready to wait and see.

THanks so much for your reply!!
Will report back later.

John

Greetings! Not sure why it would stop working. I assume you had it hooked up, it had "learned" the circuit and worked fine. But then one day it just said the circuit failed. Doncha just love technology when it gets picky?

It's possible it was just on the edge of working and how something has changed to degrade the circuit enough that it is having problems.

• It could be the main hose has gotten crimped.
• You might want to try changing the filter (in back).
• You might want to try disconnecting and reconnecting the hose.
• You might want to try disconnecting and reconnecting the smaller pressure line.
• You might want to try a new mask. Perhaps as the silicon seal dries it adds more resistance.
• And as you noted, you may need to chat with your DME.

Don't know if that helps. But I hope so.

Just got home after long day of work and music rehearsal.

Put the aforementioned valve and mask on the main hose, checked each end of the smaller tube, ran "Learn Circuit" and, voila, "success" the very first time!

Weird,but I'll take it!


The LPN from the DME (my main contact there) said she thinks this model mask is fine for this machine. She promised to share all the details of this experience with her rep from Resmed when she meets with him on Friday. On her own, she had no explanation.


JohnBFischer: thanks for your thoughts, especially given you have the same machne. Your idea that it might have been right on the edge when it passed seems plausible. I wish I could think of a way to confirm or dis-prove that.
Last night, I tried everything from all the bullets you listed except, of course, a new mask.

For now, I am happy it passed and hope to have a peaceful sleep.



zzzzzzz,
John

Turns out the Resmed Adapt SV "learns circuit successfully" just fine and dandy with Resmed's mirage quattro mask.

My DME spoke with her Resmed rep who said the F&PFlexifit should be fine.
The RT and PA at my Dr's office said the same.
My Dr even said it shouldn't matter.
Doc sent me to the sleep lab to have the complete setup checked out. The tech there was convinced the entire machine was defective until she finally tried the resumed mask. That one worked the first time, and every time since. A second resmed mask had the same successful results. If I put back the F&P, "curcuit failed" again.

It DEFINITELY matters!

This was about 2 weeks ago. I wake up almost every morning with the mask still on my face now. The machine does not feel like it is working against me so much like it did with the first mask. Especially when I wake up. Almost seems like no pressure at all. Until i remove the mask and the hose sounds like a hurrican! I wouldn't say I feel much different, though. Still groggy and don't really want to get up. I am going to give it some more time......

Thanks agin for being here....,
John